Method for preparing sulfide-based solid electrolyte, sulfide-based solid electrolyte prepared by the method and all-solid-state lithium secondary battery including the sulfide-based solid electrolyte
US-2021194044-A1 · Jun 24, 2021 · US
All solid battery, manufacturing method of all solid battery and solid electrolyte powder
US12278331B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12278331-B2 |
| Application number | US-202016862108-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 29, 2020 |
| Priority date | May 13, 2019 |
| Publication date | Apr 15, 2025 |
| Grant date | Apr 15, 2025 |
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- Title
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Abstract
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An all solid battery includes: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.6 μm or less, D50% diameter of 0.08 μm or more and 1.5 μm or less, D90% diameter of 4 μm or less, and a BET value of 3 m 2 /g or more and 20 m 2 /g or less.
First claim
Opening claim text (preview).
What is claimed is: 1. An all solid battery comprising: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder is Li 1+x Al x Ge 2−x (PO 4 ) 3 , Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−x (PO 4 ) 3 , and wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.6 μm or less, D50% diameter of 0.08 μm or more and 1.5 μm or less, D90% diameter of 2 μm or more and 4 μm or less, and a BET value of 3 m 2 /g or more and 20 m 2 /g or less. 2. The all solid battery as claimed in claim 1 , wherein an average particle diameter of the solid electrolyte powder is 0.05 μm or more and 0.6 μm or less. 3. The all solid battery as claimed in claim 1 , wherein the solid electrolyte powder is phosphoric acid-based solid electrolyte powder. 4. The all solid battery as claimed in claim 3 , wherein the phosphoric acid-based electrolyte powder has a NASICON structure. 5. A manufacturing method of an all solid battery comprising: preparing a multilayer structure having a green sheet including oxide-based solid electrolyte powder, a first paste for electrode layer provided on a first main face of the green sheet, a second paste for electrode layer provided on a second main face of the green sheet; and firing the multilayer structure, wherein the solid electrolyte powder is Li 1+x Al x Ge 2−x (PO 4 ) 3 , Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−x (PO 4 ) 3 , and wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.6 μm or less, D50% diameter of 0.08 μm or more and 1.5 μm or less, D90% diameter of 2 μm or more and 4 μm or less, and a BET value of 3 m 2 /g or more and 20 m 2 /g or less. 6. The method as claimed in claim 5 , wherein an average particle diameter of the solid electrolyte powder is 0.05 μm or more and 0.6 μm or less. 7. The method as claimed in claim 5 , wherein the solid electrolyte powder is phosphoric acid-based solid electrolyte powder. 8. The method as claimed in claim 7 , wherein the phosphoric acid-based electrolyte powder has a NASICON structure. 9. Solid electrolyte powder comprising: oxide-based solid electrolyte, wherein the oxide-based solid electrolyte is Li 1+x Al x Ge 2−x (PO 4 ) 3 , Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−-x (PO 4 ) 3 , and wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.6 μm or less, D50% diameter of 0.08 μm or more and 1.5 μm or less, D90% diameter of 2 μm or more and 4 μm or less, and a BET value of 3 m 2 /g or more and 20 m 2 /g or less. 10. The solid electrolyte powder as claimed in claim 9 , wherein an average particle diameter of the solid electrolyte powder is 0.05 μm or more and 0.6 μm or less. 11. The solid electrolyte powder as claimed in claim 9 , wherein the oxide-based solid electrolyte is phosphoric acid-based solid electrolyte powder. 12. The solid electrolyte powder as claimed in claim 11 , wherein the phosphoric acid-based electrolyte powder has a NASICON structure. 13. The all solid battery as claimed in claim 1 , wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.2 μm or less, and a BET value of 3 m 2 /g or more and 20 m 2 /g or less. 14. The method as claimed in claim 5 , wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.2 μm or less. 15. The solid electrolyte powder as claimed in claim 9 , wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more and 0.2 μm or less. 16. The all solid battery as claimed in claim 1 , wherein a thickness of the oxide-based solid electrolyte layer is 10 μm or less. 17. The all solid battery as claimed in claim 1 , wherein a surface roughness Ra of the oxide-based solid electrolyte layer is 80 nm or less. 18. The all solid battery as claimed in claim 1 , wherein the solid electrolyte powder is Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−x (PO 4 ) 3 . 19. The method as claimed in claim 5 , wherein the solid electrolyte powder is Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−x (PO 4 ) 3 . 20. The solid electrolyte powder as claimed in claim 9 , wherein the oxide-based solid electrolyte is Li 1+x Al x Zr 2−x (PO 4 ) 3 or Li 1+x Al x Ti 2−x (PO 4 ) 3 .
Assignees
Inventors
Classifications
Oxides · CPC title
Manufacturing or production processes characterised by the final manufactured product · CPC title
Li-accumulators · CPC title
containing plural metal, or metal and ammonium · CPC title
Energy storage using batteries · CPC title
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- What does patent US12278331B2 cover?
- An all solid battery includes: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder has D10% diameter of 0.05 μm or more a…
- Who is the assignee on this patent?
- Taiyo Yuden Kk
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0562. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 15 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).